The X-Plane SDK is really very different, which would mean doing this would be a very complex task. It's more likely we might convert a scenery, although I think the X-Plane 11 SDK is still not mature enough.

For example, I think an official exporter for 3ds Max has been announced, but it hasn't been released yet, and that would simplify things a lot.

And, if we'll ever release something for X-Plane, we'll start with a scenery first, since GSX requires a lot of things which still are in their infancy in the X-Plane SDK, like a proper GUI system (the existing one supports the old GUI, and the new one is still not supported in the SDK) and proper support for human animations.

It is a new Animation Manager there for X Plane.....i dont no does it help:

I checked it, and it seems more like a library of some jetway models and docking systems, more than a proper SDK for these things. And it's not free for commercial usage so, we would rather wait for something official which wouldn't require a payware 3rd party plug-in.